Progress in the No-Three-in-Line Problem, II

First solutions to the no-three-in-line problem forn=33, 37, 39, 41, 43, 45, 48, 50, 52 and for certain symmetry classes forn=26, 42, 44 are presented. All configurations withn⩽16 have been generated. Further, the significance of a new symmetry class for configurations which are almost as symmetric as those in class rot4 is demonstrated.